The 2020 Dodge Charger delivers performance sedan capability with a range of powerful engine options. When your Charger displays a P0304 code indicating a cylinder 4 misfire, understanding your specific engine configuration helps target effective diagnosis.
Understanding P0304 in the Charger
Cylinder 4 location varies by engine. In the 3.6L Pentastar V6, cylinder 4 is on the rear of the left bank. In HEMI V8 engines, cylinder 4 is on the right (passenger) bank. All engines use individual coil-on-plug ignition for precise misfire detection.
HEMI MDS Considerations
The 5.7L HEMI features Multi-Displacement System that deactivates cylinders for fuel economy. Cylinder 4 is among those deactivated. MDS lifter issues can cause misfires, particularly during transitions between active cylinder counts. Monitor when misfires occur for diagnostic clues.
Diagnostic Process
Identify your engine and locate cylinder 4 accordingly. Access the ignition coil and inspect condition. Remove the spark plug and check electrode wear. On HEMI models, note whether misfires correlate with MDS operation. Check for intake vacuum leaks.
Repair Strategy
Replace spark plugs with Mopar specifications. Test ignition coil output. On HEMI models with suspected MDS issues, lifter inspection may be necessary. Ensure oil changes use correct specification for MDS operation.